Use PromQL info function instead of resource attribute promotion#2869

Draft

aknuds1 wants to merge 13 commits intoopen-telemetry:mainfrom

aknuds1:arve/prometheus-metadata

Commits on Jan 13, 2026

Add service.name and service.instance.id to PostgreSQL metrics
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Fix PostgreSQL dashboard duplicate target_info error

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Use PromQL info function instead of resource attribute promotion

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Use custom OTel Collector image with PostgreSQL receiver fix

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Remove transform/postgresql processor

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Simplify OTel Collector config for custom PostgreSQL receiver
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Add service.name to promoted attributes and fix PostgreSQL dashboard
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Use custom Prometheus image with info() bug fix and remove workarounds
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Add Kubernetes/Kind deployment support for info() function testing

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Add custom OTel Collector image to Kubernetes deployment

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Increase memory limits for Kind deployment

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Fix Grafana dashboard conflicts and increase memory limits

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Fix host.name resource attribute in Kubernetes deployment

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